Like many of the other computers at the time, including the Sinclair ZX range, Memotech computers were based on the Zilog Z80 8-bit microprocessor. The computers were originally available in two models, the MTX500 with 32KBytes of RAM and the MTX512 with 64KBytes of RAM. The MTX500 was launched at the Earls Court Computer Fair in June 1983 and the …